Effect of silane functionalization on properties of polypropylene/clay nanocomposites

Raji, Marya; Mekhzoum, Mohamed El Mehdi; Rodrigue, Denis; Qaiss, Abou el kacem; Bouhfid, Rachid

doi:10.1016/j.compositesb.2018.04.013

Cited by 124 publications

(80 citation statements)

References 38 publications

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“…The modification of the clay with organosilanes promoted covalent bonds between polymer and clay by reactive extrusion favoring strong interactions between clay and matrix. Examples of those silanes that have been used to modify nanofiller are 3-aminopropyltriethoxysilane (APTES) and vinyltrimethoxysilane (VTMS) [37].…”

Section: Layered Nanoclaysmentioning

confidence: 99%

Polymer Nanocomposites with Different Types of Nanofiller

Oliveira¹,

Beatrice²

2019

Nanocomposites - Recent Evolutions

110

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The development of polymer nanocomposites has been an area of high scientific and industrial interest in the recent years, due to several improvements achieved in these materials, as a result of the combination of a polymeric matrix and, usually, an inorganic nanomaterial. The improved performance of those materials can include mechanical strength, toughness and stiffness, electrical and thermal conductivity, superior flame retardancy and higher barrier to moisture and gases. Nanocomposites can also show unique design possibilities, which offer excellent advantages in creating functional materials with desired properties for specific applications. The possibility of using natural resources and the fact of being environmentally friendly have also offered new opportunities for applications. This chapter aims to review the main topics and recent progresses related to polymer nanocomposites, such as techniques of characterization, methods of production, structures, compatibilization and applications. First, the most important concepts about nanocomposites will be presented. Additionally, an approach on the different types of filler that can be used as reinforcement in polymeric matrices will be made. After that, sections about methods of production and structures of nanocomposites will be detailed. Finally, some properties and potential applications that have been achieved in polymer nanocomposites will be highlighted.

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Section: Layered Nanoclaysmentioning

confidence: 99%

Polymer Nanocomposites with Different Types of Nanofiller

Oliveira¹,

Beatrice²

2019

Nanocomposites - Recent Evolutions

110

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“…In turn, a modification of outer wall surface can be carried out using alkali [12], silanes [13][14][15][16], compounds of biological origin [17], surfactants [18,19] and by surface grafting polymerization [20]. From the point of view of improving the thermal and mechanical properties as well as flammability, the most important modification is using silanes and surface grafting polymerization.…”

Section: Haloizyt Modyfikowany Cyjanuranem Melaminy I Jego Kompozycjementioning

confidence: 99%

Halloysite modified by melamine cyanurate and its compositions based on PA6

2019

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The results of the investigation on the synthesis and applications of halogen-free hybrid flame retardants (HFR) are presented. HFR were obtained by in situ modification of halloysite (HNT) with melamine cyanurate (MC). The reactions were conducted with and without the presence of poly(vinyl alcohol) (PVA) as a protective colloid. The modification of HNT was confirmed by using infrared spectroscopy (IR), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS) and transmission electron microscopy (TEM) analyses. The thermal properties of flame retardants were investigated as well. The obtained HFR were introduced into polyamide 6 (PA6). The relationship between a type of HFR and its effectiveness in reducing the flammability as well as in improvement of mechanical properties of polymer composites was investigated. It was found, that depending on the type of applied HFR, the value of the oxygen index (OI) of the obtained composites was within 29-34.5 %. In turn, the use of PVA in the synthesis of HFR increased the flexibility of the compositions containing this type of HFR.

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“…Zeta potential: The surface charge of the nanoparticles was estimated with the use of zeta potential (Zetasizer NANO ZS-ZEN3600, Malvern). The zeta potential of the fluorescent SiNPs with different diameters were evaluated at different pH (3,5,7,11,13). To adjust the pH, it was used a solutions of HCl (1M) and NaOH (1M).…”

Section: Preparation Of the Silica Nanoparticlesmentioning

confidence: 99%

“…The development of advanced multifunctional materials is essential for the development of society [1]. Nanocomposites are among the most important materials for an increasing number of applications due to the possibility of designing materials with tailored properties meeting specific application demands in areas ranging from automotive [2][3] to food packaging [4][5] and tissue engineering [6][7], among others. The introduction of inorganic nanomaterials into polymers allows the combination of the rigidity and high thermal stability of the inorganic material with the ductibility, flexibility and processability of the organic polymers [8], as well as the introduction/tuning of further functionalities such as magnetic [9] or electrical properties [10].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Platform Based on Electroactive Polymers and Silica Nanoparticles for Tissue Engineering Applications

Ribeiro¹,

Ribeiro²,

Ribeiro³

et al. 2018

Preprint

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Poly(vinylidene fluoride) nanocomposites processed with different morphologies, such as porous and non-porous films and fibres, have been prepared with silica nanoparticles (SiNPs) of varying diameter (17, 100, 160 and 300 nm) which in turn have encapsulated perylenediimide (PDI), a fluorescent molecule. Structural, morphological, optical, thermal, and mechanical properties of the nanocomposites, with SiNP filler concentration up to 16 wt% were evaluated. Further, cytotoxicity and cell proliferation studies were performed. All SiNPs are negatively charged independently of the pH and more stable from pH 5 upwards. The SiNPs introduction within the polymer matrix increases the contact angle independently of the nanoparticle diameters and the smallest ones (17 nm) improve the PVDF Young modulus from 0.94 ± 0.04 GPa for the pristine polymer film to 1.05 ± 0.06 GPa. Varying filler diameter, physico-chemical, thermal and mechanical properties of the polymer matrix were not significantly affected. Finally, the SiNPs inclusion does not induce cytotoxicity in murine myoblasts (C2C12) after 72 h of contact and proliferation studies reveal that the prepared composites represent a suitable platform for tissue engineering applications, as they allow to combine the biocompatibility and piezoelectricity of the polymer with the possible functionalization and drug encapsulation and release of the SiNP.

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Effect of silane functionalization on properties of polypropylene/clay nanocomposites

Cited by 124 publications

References 38 publications

Polymer Nanocomposites with Different Types of Nanofiller

Polymer Nanocomposites with Different Types of Nanofiller

Halloysite modified by melamine cyanurate and its compositions based on PA6

Multifunctional Platform Based on Electroactive Polymers and Silica Nanoparticles for Tissue Engineering Applications

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